feat: add EventList and HeaderBar with organize/undo/download

src/App.vue

@@ -1,6 +1,8 @@
 <script setup>
 import { useCalendar } from './composables/useCalendar.js'
 import DropZone from './components/DropZone.vue'
+import HeaderBar from './components/HeaderBar.vue'
+import EventList from './components/EventList.vue'
 
 const { isLoaded } = useCalendar()
 </script>
@@ -9,12 +11,16 @@ const { isLoaded } = useCalendar()
   <div class="app">
     <header class="app-header">
       <h1>📅 ICS 日程整理器</h1>
+      <HeaderBar />
     </header>
     <main class="app-main">
       <DropZone v-if="!isLoaded" />
-      <div v-else class="placeholder">
-        <p>文件已加载（列表与编辑器待实现）</p>
+      <template v-else>
+        <EventList />
+        <div class="detail-area">
+          <div class="empty">从左侧选择一个日程进行编辑</div>
         </div>
+      </template>
     </main>
   </div>
 </template>
@@ -38,11 +44,10 @@ body {
 }
 .app-header h1 { font-size: 18px; font-weight: 600; }
 .app-main { flex: 1; display: flex; overflow: hidden; }
-.placeholder {
-  flex: 1;
-  display: flex;
-  align-items: center;
-  justify-content: center;
+.detail-area { flex: 1; overflow-y: auto; }
+.empty {
+  text-align: center;
+  padding: 60px 20px;
   color: #95a5a6;
 }
 </style>

src/components/EventList.vue

@@ -0,0 +1,90 @@
+<script setup>
+import { useCalendar } from '../composables/useCalendar.js'
+import { DOW } from '../lib/weekday.js'
+
+const { state, stats, addEvent } = useCalendar()
+
+function selectEvent(uid) {
+  state.selectedUid = uid
+}
+
+function dowFor(ev) {
+  return DOW[new Date(ev.dtstartDate + 'T00:00:00').getDay()]
+}
+</script>
+
+<template>
+  <div class="event-list">
+    <div class="stat">
+      共 {{ stats.total }} 个日程（{{ stats.recurring }} 重复 / {{ stats.single }} 单次）
+    </div>
+    <button class="add-btn" @click="addEvent">➕ 新增日程</button>
+    <div class="list">
+      <div
+        v-for="ev in state.events"
+        :key="ev.uid"
+        class="event-item"
+        :class="{ active: ev.uid === state.selectedUid }"
+        @click="selectEvent(ev.uid)"
+      >
+        <div class="title">
+          {{ ev.summary || '(无标题)' }}
+          <span class="badge" :class="ev.rrule ? 'badge-recur' : 'badge-single'">
+            {{ ev.rrule ? '重复' : '单次' }}
+          </span>
+        </div>
+        <div class="meta">
+          {{ dowFor(ev) }} {{ ev.dtstartTime }}–{{ ev.dtendTime }}
+          <span v-if="ev.location"> · {{ ev.location }}</span>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.event-list {
+  width: 340px;
+  background: #fff;
+  border-right: 1px solid #e0e3e6;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+.stat { font-size: 12px; color: #95a5a6; padding: 12px 16px 8px; }
+.add-btn {
+  margin: 0 16px 8px;
+  padding: 8px;
+  border: 1px dashed #3498db;
+  background: #eaf4fc;
+  color: #2980b9;
+  border-radius: 6px;
+  cursor: pointer;
+  font-size: 13px;
+}
+.add-btn:hover { background: #d4eaf9; }
+.list { flex: 1; overflow-y: auto; }
+.event-item {
+  padding: 12px 16px;
+  border-bottom: 1px solid #eef0f2;
+  cursor: pointer;
+  transition: background 0.12s;
+}
+.event-item:hover { background: #f8f9fa; }
+.event-item.active {
+  background: #eaf4fc;
+  border-left: 3px solid #3498db;
+}
+.title { font-weight: 600; font-size: 14px; color: #2c3e50; margin-bottom: 3px; }
+.meta { font-size: 12px; color: #7f8c8d; }
+.badge {
+  display: inline-block;
+  padding: 1px 7px;
+  border-radius: 10px;
+  font-size: 11px;
+  font-weight: 600;
+  margin-left: 6px;
+}
+.badge-recur { background: #e8f5e9; color: #2e7d32; }
+.badge-single { background: #fff3e0; color: #e65100; }
+</style>

src/components/HeaderBar.vue

@@ -0,0 +1,77 @@
+<script setup>
+import { useCalendar } from '../composables/useCalendar.js'
+import { ref } from 'vue'
+
+const { state, canUndo, canRedo, organize, undo, redo, serialize, markSaved } = useCalendar()
+const fileInput = ref(null)
+
+function onOrganize() {
+  const stats = organize()
+  if (stats && stats.series === 0) {
+    alert('未发现可合并的重复模式')
+  }
+}
+
+function onImport() {
+  fileInput.value?.click()
+}
+
+function onFilePicked(e) {
+  const file = e.target.files[0]
+  if (!file) return
+  const { loadFile } = useCalendar()
+  loadFile(file).catch((err) => alert('解析失败：' + (err.message || err)))
+  e.target.value = ''
+}
+
+function onDownload() {
+  if (state.dirty && !confirm('有未保存的更改，仍要下载？')) return
+  const text = serialize()
+  const blob = new Blob([text], { type: 'text/calendar' })
+  const url = URL.createObjectURL(blob)
+  const a = document.createElement('a')
+  const base = state.fileName ? state.fileName.replace(/\.ics$/i, '') : 'calendar'
+  a.href = url
+  a.download = base + '.edited.ics'
+  a.click()
+  URL.revokeObjectURL(url)
+  markSaved()
+}
+</script>
+
+<template>
+  <div class="header-actions">
+    <button class="btn btn-primary" @click="onOrganize" :disabled="state.events.length === 0">
+      🔁 整理去重
+    </button>
+    <button class="btn btn-secondary" @click="undo" :disabled="!canUndo">↶ 撤销</button>
+    <button class="btn btn-secondary" @click="redo" :disabled="!canRedo">↷ 重做</button>
+    <button class="btn btn-secondary" @click="onImport">📥 导入文件</button>
+    <button class="btn btn-success" @click="onDownload" :disabled="state.events.length === 0">
+      ⬇ 下载 ICS
+    </button>
+    <span v-if="state.dirty" class="dirty-dot" title="有未保存更改">●</span>
+    <input ref="fileInput" type="file" accept=".ics" @change="onFilePicked" hidden />
+  </div>
+</template>
+
+<style scoped>
+.header-actions { display: flex; gap: 10px; align-items: center; }
+.btn {
+  padding: 7px 16px;
+  border: none;
+  border-radius: 6px;
+  cursor: pointer;
+  font-size: 13px;
+  font-weight: 500;
+  transition: background 0.15s;
+}
+.btn:disabled { opacity: 0.5; cursor: not-allowed; }
+.btn-primary { background: #3498db; color: #fff; }
+.btn-primary:hover:not(:disabled) { background: #2980b9; }
+.btn-success { background: #27ae60; color: #fff; }
+.btn-success:hover:not(:disabled) { background: #229954; }
+.btn-secondary { background: #ecf0f1; color: #2c3e50; }
+.btn-secondary:hover:not(:disabled) { background: #d5dbdb; }
+.dirty-dot { color: #e74c3c; font-size: 16px; }
+</style>